York, PA Gas-Fired Plant Goes Online Electrical Generation | Industrywide Issues | Pennsylvania | York County January 7, 2019January 7, 2019 Calpine’s York 2 Energy Center – some of which is now online (click for larger version) Two units of the Calpine York 2 Energy Center, a new dual-fuel electric generating plant that primarily uses Marcellus Shale gas, are now up and running in York County, PA. Please Login to view this content. (Not a member? Join Today!) Related